Eyelet-setting tool.



F. W. LUSCOMB.

EYELET SETTING TOOL.

APPLICATION FILED 050.8.1914.

Patented Sept. 12, 1916.

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35 to flare UNITED STATES PATENT oFFIcE.

FREDERICK W. LUSCOMB, OF NEW BEDFORD, MASSACHUSETTS, ASSIGNOR T0 ATLAS TACK COMPANY, OF FAIRHAVEN, MASSACHUSETTS, A CORPORATION OF NEW JERSEY.

EYELET-SETTING TOOL.

Patented Sept. 12, 1916.

Application filed December 8, 1914. Serial No. 876,042.

To all whom it may concern: I

Be it known that I, FREDERICK W. Luscoms, a citizen of the United States, and resident of New Bedford, in the county of Bristol and State of Massachusetts, have invented certain new and useful Improvements in Eyelet-Setting Tools, of which the following is a specification.

This invention has relation to blind eyeletting, and especially to the setting tool by which the eyelet is flared and set.

The accompanying drawings illustrate my improved eyelet-setting device in conjunction with an eyelet and a piece of work, the

eyelet being shown in successive stages of upsetting. The scale of the drawings is many times as large as the actual elements, in order to facilitate illustration and the understanding of the principles involved.

On the drawings, Figure 1 represents a vertical section through the eyelet-setting device and through the stock in which an eyelet is to be set,the eyelet-setting device, which is also a punch, being shown in the act of coacting with a punch block to form the necessary holes in the layers of stock.

Fig. 2 is a view similar to Fig. 1 excepting that an eyelet and an eyelet carrier are shown in place of the cutting block, the skirt of the eyelet being about to enter the stock. Fig. 3 represents a view similar to Fig. 2, showing the eyelet as being in an intermediate stage of upsetting. Fig. 1 shows the eyelet as having been completely set, the setting devices being in their final setting position.

The same reference characters indicate the same parts wherever they occur.

The body of the setting tool is indicated at 10. It is provided with a suitable portion 11 whereby it may be attached to a suitable holder or carrier (not shown). The

tool is tubular and has a cutting edge 12' which is sufficiently sharp to cut through the stock in which the eyelets are to be set, the waste pieces of stock being forced to pass I have shown a plurality of layers of stock, three in the present instance, 1% being the inslde or lower layer, 15 being the outside or upper layer, and 16 being the intermedlate layer. In blind eyeletting, the eyelet is set entirely behind or below the outside layer 15, and the setting tool is therefore formed the skirt of the eyelet between the layers 15 and 16 and to turn the flared portions back agalnst the layer 16, so that the eyelet when completely set will be secured while passing through the eyelet-receivinglayer or layers, and so that the original taper of the skirt will be eliminated when the skirt reaches the setting shoulder (see Fig. 3). The formation of the setting shoulder is such that the split portions of the eyelet are abruptly deflected radially in a plane substantially parallel with that of the eyelet-receiving material, and are continuously turned over until the setting is completed.

The barrel has an abruptly tapered portion 20 atits lower end, said portion ending at the cutting edge 12. This taper is provided to enable the lower end of the setting tool to freely enter the leading end of the skirt of the eyelet, and the taper is given the abrupt formation to enable the setting tool to fit tightly in the leading end of the skirt before the latter has traversed a substantial portion of the setting tool. The axial length of the portion 20, as shown, is substantially less than the thickness of the first layer 14 of eyelet-receiving material, and the maximum diameter thereof is at least as great if not greater than the internal diameter of the leading end of the eyelet. It is therefore assured that the leading end of the eyelet will fit closely upon the barrel of the setting tool before passing through the first layer of stock. As the leading end of the eyelet traverses the slightly tapered portion 19, it fits more and more tightly upon the setting tool and becomes slightly expanded.

The shank 21 of the tool tapers uniformly toward the setting shoulder 18, and upon it is located a washer 23 of resilient compressible material, preferably rubber, resting against a shoulder 22. This washer performs two functions :-it exerts sufiicient tension against the stock during the setting of the eyelet to insure the eyelet from being set beneath the stay, and it strips the upper layer from the shank when the tool is raised away from the plane of the work. By tapering the shank, the upper or outer layer of the work may be easily stripped or forced off the shank by the expansion of the washer. The washer or ring 23 is expanded when placed on the shank and is kept in place against the shoulder 22 by its own tension. The normal thickness of the washer is slightly less than the length of the shank 21 between the shoulders 22 and 18, as shown by dotted lines in Fig. 1.

In Fig. 1,the cutting edge 12 is shown coacting with a cutting block 17, having passed through all the layers of the stock and haying severed fromthe stock the circular waste pieces indicated respectively at 1 1, 15 and 16". The ring or washer is compressed by engagement with the work as shown in full lines. After the stock has been cut as shown by Fig. 1, the tool is removed from the cutting block, or the cutting block is removed from the tool, as the case may be, in order to enable the stock to receive an eyelet. Fig. 2 shows a succeeding step. In this figure, the skirt of the eyelet is indicated at 25, and the flange is indicated at 26. An eyelet carrier suitable for the purpose is indicated at 27 said carrier having a central yielding plunger or spindle 28 which recedes into the carrier in consequence of encountering the waste stock in the bore of the setting tool. The setting tool and eyelet are so proportioned as stated, that, when they first come together, the abrupt tapering portion 20 of the extremity of the barrel enters the eyelet, as shown by Fig. 2. The stock around the hole is expanded by the tapering external surfaces of the setting tool, the degree of expansion being greatest with reference to the layer 15 through which the setting shoulder passes. It may be here stated that the distance between the cutting edge 12 and the top of the setting shoulder is preferably slightly more than the aggregate thickness of the layer or layers which are to receive the eyelet, but not so great as the aggregate thickness of the eyelet-receiving layers and outer layer 15. When the end of the skirt 25 is first brought into contact with the setting tool, it engages at the same time the circular edge of the layer 1% which is in contact with the setting tool, and the skirt of the eyelet expands the aperture in the stock in passing through the same. As the skirt of the eyelet traverses the setting tool from 20 to 18, it undergoes a gradual expanding action, clinging closely to the barrel, and is not burst until it engages the abrupt concave setting shoulder 18. The upper edge or end of the eyelet, in traversing the tapering portion 19, exerts an upward pressure against the stock, which pressure tends to set the stock a little higher on the setting tool, although subject to the yielding resistance offered by the vertically compressed ring 23.- In some cases, the layer 15 will have been forced entirely above the setting shoulder by the action of the eyelet before the upper edge of the eyelet is turned outwardly by the setting shoulder, but in any event it will have been so forced before the eyelet is flared to the extent shown by Fig. 3. The

.split and flared portions, as shown by this figure, lie between the layers 15 and 1 and the turning of the split portions continues until the eyelet is in the condition shown by Fig. 4, the latter figure representing the final set of the eyelet, When the carrier 27 'recedes from the setting tool, or when the setting tool recedes from the carrier, as the case may be, the layer 15 is forced downwardly below the setting shoulder by the expansive action of the ring 23, and the layer 15 in turn forces the set eyelet downwardly from the setting shoulder, the tapering surfaces enabling the work to be easily stripped from the setting tool by the action of the ring 23.

By means of a combined punch and set constructed in accordance with this invention, I am able to form uniform lacing apertures in the outer or upper layer of the work, irrespective of the character or quality of the stock, and am also able to avoid splitting or marring the edges of the stock surrounding the apertures. Another advantage is gained, in that by employing a very abrupt setting shoulder, the diameter of the punch thereabove may be made relatively small, so that the apertures in the outer layer are correspondingly reduced in diamter. And, again, by means of the construction shown, I am able to prevent false setting, i. (2., setting the eyelet in the outer layer of the work, or causing the split portions of the eyelet to penetrate the same.

I claim:

1. A tool for setting blind. eyelets in one or more of a plurality of layers of material, said tool having an abrupt setting shoulder formed to split and turn back the leading end of an eyelet skirt, a stock-receiving portion above and adjoining said shoulder, for the top layer of such material, a relatively gradual tapering portion below and adjoining said shoulder, and a relatively abrupt tapering portion below and adjoining the first said tapering portion, the smaller end of said abrupt tapering portion being adapted to enter theleading end of the eyelet without expanding it, and said gradual tapering portion being adapted to expand the eyelet without splitting it.

2. A combined cutter and setting tool consisting of a tubular member having an abrupt setting shoulder, a stock-receiving portion above and adjoining said shoulder, a relatively gradual tapering portion below and adjoining said shoulder, and a relatively abrupt tapering portion extending from the first said tapering portion to the lower end of said member, said lower end having a sharp annular cutting edge.

3. An eyelet-setting tool having a relatively abrupt tapering portion at its leading end, an abrupt setting shoulder above said portion, an intermediate portion con necting the said first portion and said shoulder, and a stock-receiving portion above and adjoining the perimeter of said shoulder, the smaller end of the first said portion be.-

-ing adapted to enter the skirt of an eyelet without expanding it, and said intermediate portion being adapted to expand the skirt without bursting it.

4. An eyelet-setting device comprising a setting tool having a setting shoulder and a tapering stock-receiving portion above said shoulder, the small end of said tapering portion adjoining the perimeter of said shoulder, and a stock-removing member consisting of a ring of elastic compressible material arranged upon said tapering portion in position to force the stock past said shoulder.

5. An eyelet-setting device comprising a setting tool having a setting shoulder, a tapering eyelet-engaging portion arranged to guide the eyelet to said shoulder, and a tapering stock-engaging portion above said shoulder terminating at a second shoulder, the small end of said stock-engaging portion adjoining the perimeter of said setting shoulder, and a ring of elastic material arranged upon said stock-engaging portion and engaging the second shoulder,

6. An eyelet setting tool having two coaxial tapering stock-receiving portions, and

an abrupt setting shoulder connecting the larger end of one of said portions and the smaller end of the other.

In testimony whereof I have affixed my signature, in presence of two Witnesses.

FREDERICK W'. LUSGQMB. Witnesses:

ALBERT C. PAINE, PATRICK J. SMYTH. 

